Percy vs Coveralls
Percy and Coveralls are both popular tools in the Code Review & Testing space. Both use a freemium pricing model, with Percy starting at Free and Coveralls at Free. Both offer a free tier to get started. Below we break down features, pricing, strengths, and weaknesses to help you decide which tool fits your workflow best.
Last updated: March 2026
Quick Verdict
Choose Percy if you want automated visual testing to catch ui regressions in every pr.. Percy's biggest strengths include catches visual regressions that unit tests miss and excellent cross-browser testing coverage. It's also rated higher (4.2 vs 3.9). Choose Coveralls if you prefer track code coverage over time and ensure test quality in every pr.. Key advantages include simple setup with most ci providers and free for open-source projects.
Automated visual testing to catch UI regressions in every PR.
Track code coverage over time and ensure test quality in every PR.
| Percy | Coveralls | |
|---|---|---|
| Pricing | Free | Free |
| Free Tier | Yes | Yes |
| Pricing Model | Freemium | Freemium |
| Rating | ★ 4.2 | ★ 3.9 |
| Categories | Code Review & Testing | Code Review & Testing |
| Key Features | 6 features | 6 features |
| Feature | Percy | Coveralls |
|---|---|---|
| Automated visual regression testing | ✓ | — |
| Cross-browser screenshot comparison | ✓ | — |
| Responsive design testing across screen sizes | ✓ | — |
| GitHub and GitLab PR integration | ✓ | — |
| Approval workflows for visual changes | ✓ | — |
| Integration with Cypress, Playwright, and Storybook | ✓ | — |
| Code coverage tracking and trend analysis | — | ✓ |
| Pull request coverage reporting | — | ✓ |
| Coverage threshold enforcement | — | ✓ |
| Support for all major languages and CI services | — | ✓ |
| Historical coverage data and charts | — | ✓ |
| Badge generation for repository READMEs | — | ✓ |
Percy
Pros
- + Catches visual regressions that unit tests miss
- + Excellent cross-browser testing coverage
- + Good integration with popular testing frameworks
- + Approval workflow makes review process clear
Cons
- − Free tier limited to a small number of screenshots
- − Can produce false positives from dynamic content
- − Pricing scales with screenshot volume
Coveralls
Pros
- + Simple setup with most CI providers
- + Free for open-source projects
- + Clean interface for tracking coverage trends
- + Good GitHub integration with PR checks
Cons
- − Less feature-rich than Codecov
- − UI feels dated compared to newer alternatives
- − Limited analytics on paid tiers
The Bottom Line
Choose Percy if: you want automated visual testing to catch ui regressions in every pr.. It's completely free to use. It holds a higher user rating (4.2 vs 3.9). Keep in mind: free tier limited to a small number of screenshots.
Choose Coveralls if: you prefer track code coverage over time and ensure test quality in every pr.. It's completely free to use. Keep in mind: less feature-rich than codecov.
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